CN1283986C - Method and system for localization and correlation of leakage of fluid conveying conduit - Google Patents
Method and system for localization and correlation of leakage of fluid conveying conduit Download PDFInfo
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- CN1283986C CN1283986C CNB02130114XA CN02130114A CN1283986C CN 1283986 C CN1283986 C CN 1283986C CN B02130114X A CNB02130114X A CN B02130114XA CN 02130114 A CN02130114 A CN 02130114A CN 1283986 C CN1283986 C CN 1283986C
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/12—Analysing solids by measuring frequency or resonance of acoustic waves
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Abstract
A system for mensurating and associating a leak in a conduit, comprises a plurality of recorders for detecting and storing sound data, an interface unit movable connected with the plurality of recorders, and a computer system movable connected with the interface unit. Each recorder includes a housing and an electronic ciucuit configured in the housing, in which the electronic ciucuit includes a micro-processor for controlling operation of the recorder, a sound sensor for detecting the sound data and a sound storage circuit for storing the sound data detected by the sound sensor. During usage, the plurality of recorders are configured along the conduit and programmed to record the sound data. The sound data recorded by the recorders are downloaded to the computer system which orderly mensurates and associates any leak in the conduit.
Description
Technical field
The present invention relates generally in liquid conducting pipes to detect the method and apparatus that leaks, relate more specifically to detect and determine definitely be embedded in underground or other be difficult near the liquid conducting pipes of checking in the method and apparatus of leak position.
Background technology
Liquid conducting pipes as the water distribution pipeline, often leaks.What make that problem complicates is, because liquid conducting pipes is buried under the ground usually or is not exposed or be inaccessible, the leakage of Chan Shenging is usually on the surface in this case, and so not detected.As a result, liquid conducting pipes may take place to leak for a long time, and also never tested as 1 year or several years, this is that people are undesirable.
In addition, usually carry out in the prior art multistage checking process measure with related liquid conducting pipes in leakage.
Particularly, in the phase one, carry out general measurement or mensuration mode usually to determine in pipeline, as a pipeline, the leakage of existence.Usually by monitoring that liquid flows into and flows out section metering district (DMA), by monitoring the minimum stream at night (night flow) of liquid, or surpass time of predetermined critical by the noise that utilizes audio recorders to detect to produce by liquid, realize leakage positioning.
In subordinate phase, carry out the exact position of more detailed interrelational form usually to determine in the underground liquid conveyance conduit, to leak.Particularly, correlator (Correlator) is normally used on the surface on the underground utilities or be used directly in and be easy on the approaching external device (ED), as valve or hose saddle, so that more properly determine the position of leaking in the pipeline.After using correlator to determine the leak position, the ground of leak top is excavated, and leaks to repair.Can know that by understanding the exact position of leaking in the pipeline excavation is only limited to the directly road surface part above leaking, and has therefore reduced excavation cost and repairing time, this is desirable.
Correlator utilizes sound techniques to determine the leak position usually.Particularly, well-known, the liquid from pressure pipeline such as pipeline are selected such as water, produces the high frequency sound wave of propagating to both sides from leak with fixing speed along pipeline.Same well-known, by placing pair of sensors at the leak opposition side, sensor will receive leakage noise to the different distance of leak at different time according to each sensor.Because the velocity of propagation of sound wave is easy to calculate, the leak position in the pipeline can be determined according to the time difference of each sensor sound wave.
U.S. Patent No. 4 at A.R.Anway, 083, in 229, disclose and a kind ofly be used for detecting and determine method and apparatus in underground pipeline or analog leak of liquid position, wherein monitor on the spaced points of selecting by microphone or other transducer by leaking the vibrations that produce, wherein the vibrations of monitoring on each in two somes point are converted into electric signal, and wherein change the degree of correlation of two consequential signals so that the maximal correlation phenomenon between signal is determined the leak position by a signal with respect to the variable time delay of another signal.In one embodiment, by the time delay line and the device that is used for progressively changing delay line length of a variable-length, realize that a signal postpones with respect to the variable time of another signal.In another embodiment, finish variable time by recycle lag line analyser and postpone, this analyser is compared with the above-mentioned delay in the above-mentioned time, and the variable ratio longitudinal made delay line needs the more data duration.
Disclosedly in the Anway patent of mentioning in front be used for detecting and the method and apparatus of definite underground pipeline leak of liquid utilizes a kind of cross correlation measurement technology, one of them signal is constantly relatively postponed with respect to another signal during similarity between two signals gradually at device.This makes equipment energy measurement leakage noise arrive the poor of each sensor travel-time Td.The velocity of sound by determining specific pipeline and grasp distance between the sensor, device can calculate the leak position according to following formula:
L＝[D-(V×Td)]/2
Wherein L is the distance of leak position with respect to a sensor, and D is the overall distance between the sensor, and V is the speed of sound in the pipeline medium, and Td is a transmission time difference.
U.S. Patent No. 5 at T.J.Allen, 205, in 173, disclose a kind of improved cross-correlation technique that in pipeline, uses and detected the method and apparatus that leaks, comprise with a pair of circulating delay line being the improved interlock circuit of characteristic, be used for receiving respectively by periodic sequence, temporary transient storage and processing are from the sample value of the input data of a pair of long range positioning sensor acquisition, a mlultiplying circuit that the sample value that is input to each channel of wanting multipling channel be multiply by be stored in circulating delay line each sample value relevant with other channel, totalizer and an accumulative total storer and a display that shows association results that is used for the accumulative total multiplication result.
Although commercial as everyone knows and be widely used, be used to detect and descend the art methods of pipeline liquid leak position and equipment to have significant disadvantage definitely.
For example, be used to detect and descend definitely the art methods of pipeline liquid leak position and equipment need usually real-time analysis by this to voice data that sensor obtained.Particularly, via a communication linkage, be sent to central associative cell by voice data that sensor detected as radio or rigid line link.The data that send to central associative cell are subsequently by related labour's real-time analysis, and real-time analysis guarantees synchronous in time by the voice data of sensor.As a result, because the necessary real-time analysis of voice data, these data can not be used to the related or comparison of repetition in repair work after leakage position is finished.In addition, because the necessary real-time analysis of voice data needs a fixing related labour during by sensor accumulation voice data, undesirable expense of people and running time have therefore been increased.
As another example, although commercial as everyone knows and be widely used, mentioned above be used for measuring the multistage checking process commonly used of leaking with related liquid conducting pipes, usually use different equipment to finish, therefore increased undesirable equipment and job costs with different labours.
As another example, be used for detecting and descend definitely the art methods and the equipment of liquid conducting pipes leak of liquid, usually require a fixing delay is incorporated in one of them audio data stream, increase undesirable total analysis time thus.
As another example, be used for detecting and descend the art methods of liquid conducting pipes leak of liquid and the variation that equipment can not compensate environment temperature usually definitely, damaged computational accuracy thus to leak in the pipeline, this is undesirable.
As another example, be used for detecting and the art methods and the equipment of definite underground pipeline leak of liquid are analyzed one group of voice data usually, this may be unreliable.Particularly, when increasing the liquid use, may produce temporary transient noise in pipeline, the possibility of result produces the inaccuracy of undesirable detection of leaking and location in pipeline.
As another example, be used for detecting and the art methods and the equipment of definite underground pipeline leak of liquid, during collecting, voice data can only use two sensors usually, limited speed and the efficient of checking pipeline thus, this is undesirable.
Summary of the invention
An object of the present invention is to provide the method and system that leaks in a kind of new and improved mensuration and the related liquid conducting pipes.
Another object of the present invention be to provide a kind of voice data that utilizes collection measure with related liquid conducting pipes in the method and system that leaks.
Another purpose of the present invention is a voice data that a kind of correlation of leakage noise will be provided to make the method and system of or core leak position exactly.
A further object of the invention is the method and system that a kind of type mentioned above will be provided, and wherein the voice data of Shou Jiing is stored in and is used in the storer from now on the mensuration of leaking with related.
Another object of the present invention is the method and system that a kind of type mentioned above will be provided, and it can compensate the variation of environment temperature.
Another purpose of the present invention is the method and system at a plurality of timeslices (time slices) collection voice data that a kind of type mentioned above will be provided.
A further object of the invention is that a kind of low cost manufacturing of type mentioned above and method and system easy to use will be provided.
In addition, as characteristics of the present invention, providing a kind of is used for measuring with related to make the system at least one at least one leakage of liquid conducting pipes, described system comprises: (a) first and second registers that are placed with a kind of spaced relation along liquid conducting pipes, described first and second registers are suitable for detecting and being stored in the voice data that produces at least one liquid conducting pipes, (b) mobilizable interface unit that is connected in described first and second registers, reach (c) mobilizable computer system that is connected in described interface unit, wherein the voice data of being stored by described a plurality of register can be downloaded to described computer system, described computer system can utilize voice data to measure and be associated at least one interior leakage of at least one pipeline, wherein said first register comprises: (a) by the shell of moulding with the inner chamber that limits a sealing, and (b) be configured within the inner chamber of described shell, be used to detect and be stored in the electronic circuit of the voice data that produces at least one liquid conducting pipes, wherein said electronic circuit comprises, (a) microprocessor of described first register operation of control, (b) one is connected in the battery supply that described microprocessor is used to the described first record power supply, (c) one is connected in described microprocessor is used to detect the voice data that produces at least one liquid conducting pipes sound transducer, reach and (d) be connected in the data storage circuitry that described microprocessor is used to store the voice data that is detected by described sound transducer, (e) be used to put in order and filter the signal arrangement and the filtering circuit of the voice signal that detects by described sound transducer, described sound transducer is connected to described microprocessor by described signal arrangement and filtering circuit, (f) be connected to the real-time clock of described microprocessor, (g) be connected to a counter of described real-time clock and described microprocessor, and (h) be connected to a temperature sensor of described real-time clock and described microprocessor.This paper provides a kind of flute profile crucible former parts that are used to constitute the flute profile casting pattern, comprise a pedestal and a movable base plate that is installed on the described pedestal, described base plate comprises a bottom surface and a upper surface, and upper surface has groove to constitute a fixedly enclosed slot of profile of tooth casting pattern.
As another characteristics of the present invention, provide a kind of being used for to measure with related to make the system of at least one leakage at multidimensional liquid conducting pipes with a plurality of parts, described system comprises: (a) a plurality of registers of placing with spaced relation along a plurality of parts of liquid conducting pipes, described a plurality of register is suitable for detecting and being stored in the voice data that produces in the liquid conducting pipes, (b) a mobilizable interface unit that is connected in described a plurality of registers, reach (c) mobilizable computer system that is connected in described interface unit, wherein the voice data of being stored by described a plurality of register can be downloaded to described computer system, described computer system can utilize voice data to measure and be associated at least one leakage in the liquid conducting pipes, one of wherein said a plurality of registers comprise: (a) by the shell of moulding with the inner chamber that limits a sealing, and (b) be configured within the inner chamber of described shell, be used to detect and be stored in the electronic circuit of the voice data that produces at least one liquid conducting pipes, wherein said electronic circuit comprises, (a) microprocessor of described first register operation of control, (b) one is connected in the battery supply that described microprocessor is used to the described first record power supply, (c) one is connected in described microprocessor is used to detect the voice data that produces at least one liquid conducting pipes sound transducer, reach and (d) be connected in the data storage circuitry that described microprocessor is used to store the voice data that is detected by described sound transducer, (e) be used to put in order and filter the signal arrangement and the filtering circuit of the voice signal that detects by described sound transducer, described sound transducer is connected to described microprocessor by described signal arrangement and filtering circuit, (f) be connected to the real-time clock of described microprocessor, (g) be connected to a counter of described real-time clock and described microprocessor, and (h) be connected to a temperature sensor of described real-time clock and described microprocessor.
The present invention's purpose in addition, and characteristics and advantage part will state in following explanation, and part will become clear or can understand by enforcement of the present invention from instructions.In explanation, with reference to the accompanying drawing that constitutes its part and show by the mode of explanation enforcement embodiments of the invention.Embodiment will extremely be described in detail so that those skilled in the art can implement the present invention, and will understand, other embodiment can be utilized and can carry out the change of structure and can not depart from the scope of the present invention.Therefore, following detailed description does not comprise the meaning of restriction, and scope of the present invention is preferably stipulated by the appended claims.
Description of drawings
The accompanying drawing that inserts this paper and constitute an instructions part illustrates one embodiment of the present of invention, and is used from explanation one and sets forth principle of the present invention.Identical in the drawings reference number is represented identical parts:
Fig. 1 be according to measure and related liquid conducting pipes in the block diagram of system of training centre formation of the present invention of one or more leakages;
Fig. 2 is the skeleton view of one of them register shown in Figure 1;
Fig. 3 is the block diagram of register shown in Figure 2;
Fig. 4 is the skeleton view of interface unit shown in Figure 1;
Fig. 5 is that expression utilizes system shown in Figure 1, measures and be associated in the liquid conducting pipes process flow diagram of the method for some leakages in a plurality of leakages;
Fig. 6 is the skeleton view of a pair of register shown in Figure 1, and the register of expression is installed in the relative both sides that liquid conducting pipes leaks;
Fig. 7 utilizes method shown in Figure 5, is used for determining a figure of liquid conducting pipes leak position; And
Fig. 8 is the skeleton view of a plurality of registers shown in Figure 1, and the register of expression is installed on all places of complicated pipeline.
Embodiment
With reference to Fig. 1, represented to measure according to the present invention and be associated among the liquid conducting pipes C, as a underground water pipeline, the system that the training centre of one or more leakages constitutes, this system is identified by reference number 11 usually.
Referring now to Fig. 2 and 3, each register 13 comprises a shell 19 that forms strong construction, with the inner chamber 21 that limits a sealing.
Therefore should be noted that shell 19 preferably is made of the die casting aluminium that has polyester powdery paints finish paint and IP68 protective coating, can make register 13 immerse in the water fully and test pressure is at least 3.0 meters (10 feet) hydraulic pressure.Yet, understand that register 13 can be constituted and do not broken away from essence of the present invention by the material of replacing.
Be to be further noted that shell 19 preferably constitutes with the cylindrical in shape that is about 140mm (5.6 feet) and the about 66mm of diameter (2.6 inches).In addition, shell 19 is constructed to preferably make that register 13 about 0.7kg (1.54 pounds) are heavy and can operates between-10 ℃ (14 ) and 70 ℃ (158 ).Yet, understand that register 13 can be made with other shape, weight and/or operating temperature range and can not break away from essence of the present invention.
A magnetic engagement device 23 is installed on the shell 19.Magnetic engagement device 23 can make register 13 simply be fixedly mounted on the metal pipe line or other is easy to approaching metal outer device, as a valve or hose saddle.Particularly, magnetic engagement device 23 can make register 13 be easy to be placed on pipeline or the external device (ED), by magnetic force register 13 is stayed thereon.
As hereinafter being described in further detail, communications connector 25 is installed on the shell 19 and makes and is configured in each register 13 interior register circuit interconnection to interface unit 15.Communications connector 25 preferably comprises the serial digital communications connector of four military pin connectors 27.Particularly, the designated transmission of the first military pin connector 27-1 as serial communication signal, this serial communication signal is preferably with about 115,200 baud rate work.The designated external electric energy that is used to receive from interface unit 15 of the second military pin connector 27-2 thus, prolongs the life-span of each register 13 battery.The designated function of reset of the 3rd military pin connector 27-3 as register 13.The 4th military pin connector 27-4 is designated as port identification (ID) input, and the port id input is used so that computer system 17 can detect position and its existence of identification of the register 13 that is connected to interface 15.Be to be further noted that communications connector 25 preferably includes the lid 28 of energy active configuration on pin connector 27, therefore, can make the time that is left on underground unserviced register 13 prolongation operations and the dangerous or harm that does not have any filling.
The battery supply 33 of powering for register 13 is connected to microprocessor 31.Best, battery source 33 is lithium-thionyl chlorideization (lithium thionylchloride) battery components that not reproducible charging has about 5 year life-span.Yet, understand that battery supply 33 has been represented and made register 13 can not break away from essence of the present invention for the battery component of any known type of self-contained unit.Should be noted that in fact battery supply 33 makes register 13 is self-contained units, therefore, make register 13 stay the underground unattended dangerous or harm that has any obstruction for a long time and not.It should be noted that register 13 is connected to interface unit 15, interface unit 15 can provide electric energy to register 13, saves battery supply 33 thus.
The signal arrangement and the filtering circuit 37 that are used to put in order and filter the voice data that is detected by sensor 35 are connected to sensor 35, in addition microprocessor 31.Best, signal arrangement and filtering circuit 37 comprise that an adjustable 50/60Hz notch filter is to reduce undesired frequency, as those frequencies by power lead produced.Yet understand that circuit 37 may comprise the wave filter of other type and can not break away from essence of the present invention.
The gain-adjusted that should be noted that circuit 37 combinations will guarantee to have enough amplitudes of being measured by sound transducer 35 by leaking the voice data that L produced, and can not make circuit 37 saturated.This gain-adjusted is controlled at operates and uses simple averaging automatically in the register 13, the noise signal that causes to avoid because by near the vibration of moment impact is the appearance of big peak value and undue desensitization at random.Particularly, gain-adjusted is controlled by microprocessor 31, and microprocessor 31 is gain-adjusted a value that is adapted to the sound noise level.12bit analogue-to-digital converters (A/D) are used to the voice data converting digital form that will be detected by sensor 35, are read with the speed that reaches 5KHz by microprocessor 31 successively subsequently.
Be to be further noted that signal is put in order and filtering circuit 37 is only connected by microprocessor 31 when register 13 recording voice data, otherwise circuit 37 is cut off to reduce electric energy loss.
The data storage circuitry or the random-access memory (ram) circuit 39 that are used to store the voice data of being surveyed by sensor 35 are connected to microprocessor 31.Best, data storage circuitry 39 has enough storage spaces so that stored energy is programmed for 4.5 minutes the SoundRec time of 32 separate records in advance, and data storage circuitry 39 had both made also can retention data when lacking electric energy.
Should be noted that data storage circuitry 39 has been eliminated needs expensive and insecure fixed point that is used to, related in real time radio or rigid line connect.On the contrary, data storage circuitry 39 can make register 13 collect and the stored sound data, can carry out association in the place away from the workplace in the time after a while like this, and this is desirable.
The real-time clock 41 that is used for a plurality of register 13 time synchronized is connected to microprocessor 31.Best, clock 41 comprises one 32, the clock microprocessor chip (not shown) of the quartz oscillator (not shown) of 768Hz and a general continuous operation.The output of clock microprocessor chip is connected to 32 bit counter 43, and counter 43 is connected to microprocessor 31 and is controlled by microprocessor 31.
Should be noted that clock 41 was updated in the clock register in the clock microprocessor chip and exports fixing frequency as the time interval with 1 second.Frequency that should be fixing increases progressively the watchdog timer (not shown) as the time interval notice microprocessor 31 with rule and adds counter 43 with increasing progressively.Up to a look-at-me that receives with the time interval of rule from clock 41, whether microprocessor 31 definite sensors 35 will be connected and carry out another record.
Be to be further noted that counter 43 can be behind the beginning SoundRec time of delay recorder 13, therefore in the more flexibility that provides in service of system 11, this is desirable.In addition, counter 43 is used to calculate the linear drift compensation of clock 41, and this also will be described in detail hereinafter.
Temperature sensor or thermistor 45 are connected to clock 41 and microprocessor 31.Sensor 45 can make clock 41 proofread and correct, so that compensation in time is because the drift that temperature variation causes.Particularly, find that during temperature variation, the internal clocking 41 of register 13 will drift about around, therefore in leaking association process, produce the tangible error of calculation.Like this, be used to the compensating clock drift by sensor 45 collected temperature datas.Should be noted that will guarantee the accuracy of temperature data, sensor 45 is directly installed on the crystal oscillator of clock 41, because the crystal oscillator sensitive portions that is 41 pairs of temperature degree of clock.
A control circuit 47 is connected to microprocessor 31.Control circuit 47 provides multiple function, regulates battery monitoring and monitoring circuit as electric energy.Particularly, control circuit 47 is by gathering cell voltage and total current drain measured value, monitoring battery power supply 33.In addition, control circuit 47 provides monitoring circuit, if counter 43 remove by microprocessor 31, if for example program is because some big electrical interference when being locked on the uncertain program space, its per at least 16 second a counter reset 43.
In the use, register 13 is recorded in the voice data that produces among the liquid conducting pipes C in the following manner.Whether microprocessor 31 is next voice data record time from look-at-me of clock 41 receptions to detect with the time interval of rule, if microprocessor 31 determines that voice data will write down, microprocessor 31 allows the electric energy from battery supply 33 be sent to signal arrangement and filtering circuit 37 and sound transducer 35, microprocessor 31 usefulness suitable clock signal are all filtering circuits of circuit 37, comprise the 50/60Hz wave filter, programming.Sound transducer 35 reads in the voice data that produces in the pipeline C subsequently.The voice data that inner sensor 35 is detected is converted into the digital format that is read by microprocessor 31 subsequently.After reading voice data, microprocessor 31 calculates and is provided with a suitable gain for signal arrangement and filtering circuit 37 settings, reads then and recording counter 43 and temperature sensor 45, so that the compensating clock drift.According to the clock drift of repaying outward, another voice data is sampled in a group record of set rate subsequently, and the voice data of sampling is stored in data storage circuitry 39.
Referring now to Fig. 4, interface unit 15 comprises a carrying case 49 and a recorder interface 51 that is positioned at carrying case 49.
Carrying case 49 is preferably by solid, durable made.Such as aluminium and comprise an inner chamber 53 of determining size, and can hold a plurality of registers 13 and recorder interface 51.Best, a liner as foam, is configured in the inner chamber 53 with protection register 13.
Referring now to Fig. 5, expression utilizes system 11 to measure and be associated in the method for one or more leakage L among the liquid conducting pipes C, and this method is identified by reference number 111 usually.Method 111 will at first be narrated and utilize a CP register 13-1 and the 2nd CP register 13-2 to measure and be associated in leakage L among the pipeline C.Yet, understand that as hereinafter also being described in detail, other register 13 can be used to not violate in the method 111 spirit of the present invention.
Should be noted that, method 111 can allow by the voice data of register 13-1 and the asynchronous record of 13-2 reach 1 millisecond accuracy synchronously, this is desirable.Particularly, register 13-1 and 13-2 reach 1 millisecond of accuracy, and the synchronous method 111 that can make is made mistiming between the signal that the register 13 by association write down, and this is a fundamental purpose of the present invention.
Setting up in the pattern 113 by synchronously and after the programming deployment mode 115 of method 111 beginnings for the recording voice data at register 13.Particularly, in deployment mode 115, a register 13-1 is placed in a position along pipeline C, and another register 13-1 is placed in another position along pipeline C, and register 13 is left on the pipeline C by means of magnetic engagement device 23.Should be noted that deployment mode 115 is very easy, quick and inconspicuous and both can also can finish at night by day, this is desirable.
After deployment mode 115, method 111 comprises a sampled voice and memory module 117.In sampled voice and memory module 117, the register 13 of pre-programmed is in a plurality of timeslice samplings and be stored in the voice data that produces in the pipeline C, a plurality of readings be used in case eliminate in pipeline C, produce temporary transient, with leak irrelevant noise (that is, because the temporary transient increase that water is used).Like this, the collection of a plurality of voice data samples energy filtering noise at random, what stay analysis like this is by leaking the continuous sound wave that is produced among the pipeline C.Usually, analyze metallic conduit and the timeslice of small number is arranged with regard to (that is the short record of 2 or 3 10 second duration) much of that.Yet, can be increased writing time for the pipeline of other type.In addition, the too big place of ambient noise can be adopted in the preliminary election start time at night by day, utilized nearly loud (shouter) record of 30 times.
After sampling and memory module 117, register 113 is collected in restoring (retrieval) pattern 119.Should be noted that the recovery of register 113 is very simple and unobtrusive and can carries out any time by day.During recovery mode 119, register 13 is connected to the recorder interface 51 of interface unit 15, and interface unit 15 is connected to computer system 17 again.As a result, as hereinafter also will being described in detail, the user can utilize computer system 17 to measure and be associated in leakage among the pipeline C.
Should be noted that because register 113 can be gathered and the stored sound data, register 13 can be used to time and remote position finding and correlation of leakage L, the real-time needs that calculate of elimination thus after a while.In addition, should be noted that because the location of leaking L does not need real-time calculating with related, method 111 is in fact inconspicuous and be easy to use, this is desirable.
After reconstitution steps 119, whether user's decision carries out the measurement scanning of an alternative pipeline C, and this decision is represented by the reference number among Fig. 5 120.
Measure scanning if user decision is carried out in pattern 120, measure scanning or mode determination 121 for one and be performed any leakage L to determine in pipeline C, to exist.Particularly, the user utilizes computer system 17 to carry out SoundRec result's initial observation.Software package will be provided with length and the material of a defective pipeline C, the exercise and show one group of initial result of being correlated with.The user is allowed to change the length and the material of default pipe.Again related then.Should be noted that measurement scan pattern 121 is selectable,, determine the leakage that generally exists among the pipeline C because flow the minimum night that the user can alternatively pass through to monitor the inflow and the outflow of pipeline C section metering district (DMA) liquid or pass through liquid among the supervision pipeline C.
Represented as reference number 122, measure scan pattern 121 and will determine the general leakage that exists among the pipeline C.Determine not leak the L existence among the pipeline C if measure scan pattern 121, represented as reference number 123, method 111 stops.On the contrary.Determining to have in pipeline C one or more leakage L to exist if measure scan pattern 121, is bypasses if perhaps measure scan pattern 121, requires the user to determine that the distribution situation of pipeline C is known, represented as parameters number 124.
If the distribution situation of pipeline C is known, 125 beginnings of distribution situation input pattern.Particularly, in distribution situation input pattern 125, require the user to be input to computer system 17 about the definite information of the concrete material of the diameter of the distance D between register 13-1 and the register 13-2, pipeline C and pipeline C.Should be noted that the direct in-site measurement that distribution situation information may often be planned from GIS obtains.
If the distribution situation of pipeline C is known, can utilizes by three or more register 13 collected voice datas and carry out distribution situation deterministic model 126.Should be noted that if three or more register 13 is used to method 111, distribution situation deterministic model 126 can only be calculated.Particularly, in distribution situation deterministic model 126, when three or more register 13 is used, be positioned at the homonymy that leaks L and two adjacent registers that separate a known distance, by measuring the velocity of sound that is used to calculate in-line retardation time in real time, wherein voice signal is detected by two registers.
The final step of method 111 is will carry out association mode 129 to determine to leak the accurate position of L definitely in pipeline C.Association mode 129 utilizes CP register 13 collected voice datas to determine the position of one or more leakage L among the pipeline C exactly.
Should be noted that, in association mode 129 novel place especially about, precision, wherein association mode 129 can calculate between the voice signal that is write down by related recorder 13 mistiming and as hereinafter also being described in detail, determine the exact position of one or more leakage L among the pipeline C.
Particularly, association mode 129 is done in the following manner.Referring now to Fig. 6, by on pipeline C, leaking the first data recorder 13-1 and the second data recorder 13-2 that the L opposition side disposes, the distance D that register 13-1 and 13-2 are spaced will be detected at different time by the first data recorder 13-1 and the second data recorder 13-2 by the noise that leaks the L generation.When register 13-1 and 13-2 download to computer system 17 with voice data, associated software in computer system 17 will determine, when the leakage noise signal arrives data recorder 13-1 and the mistiming τ of leakage noise signal between when arriving data recorder 13-2.
Should be noted that the velocity of propagation V of leakage noise is a fixed value and can be calculated by computer system 17 in distribution situation input pattern 125.Because velocity of propagation V is leaving on two directions of source of leaks L and fixing in pipeline C, leak with respect to the exact position of register 13-1 and can determine with following equation:
P＝(D-V×τ)/2
As mentioned above, be downloaded on the computer system 17 and on the random time after sampling and memory phase 117, association mode 129 is by off-line execution by the data of each CP register 13 records.As a result, should be noted that voice data can be stored in computer system 17 subsequently, so that determine to repeat the comparison association after carry out at the position at pipeline C in repair work.
In association mode 129, voice data is preferably on the sort of correlation graph shown in Figure 7 and is shown.Correlation graph among Fig. 7 has shown the relative level of association for the voice signal that is detected by register 13 of the function of the distance from register 13-1 to 13-2.As shown in the curve map, the appearance of leakage will produce sizable frequency peak on curve map, and therefore this peak value can make the user conclude the exact position of leakage with respect to register 13, and this is desirable.
Because the time of association mode 129 after sampled voice and memory module 117 need be made two groups of voice datas be synchronized to the identical moment by off-line execution, is accurately to guarantee association.For example, if be delayed 10 milliseconds from the data of a register with respect to other register, the error of correlation of leakage actual location may produce, and this is undesirable.In addition, the data between a plurality of registers, during association mode 129 by to the real-time clock 41 of each register 13 synchronously, be synchronized to 1 millisecond accuracy.
Although can utilize two registers, 13 manners of execution 111, understand that method 111 may utilize other register to be done and can not run counter to spirit of the present invention.
As an example, method 111 can be utilized three or more CP register 13 selectively, with measure with related pipeline C in leakage L, the result, a plurality of registers 13 can be positioned along complicated pipeline P as shown in Figure 8, with the source of leaks L that determines exactly wherein to form, therefore can fast and be easy to big zone is monitored that this is desirable.Should be noted that, to the application of three registers in a plurality of registers 13 method 111 is used in around rectilinear tubes or T-shape connect, to determine the positions of a plurality of leakage L.
Should be noted that, use three CP registers 13 can on multidimensional pipeline C, carry out the association of leakage noise.Particularly, register 13 can be configured in a plurality of parts of pipe concurrently, therefore reduces correlation of leakage L number in needed man-hour in pipeline C significantly, and this is desirable.
The embodiment of the invention described above only is indicative, and those skilled in the art can carry out many changes and modification with it and can not break away from essence of the present invention.The modification of the change that all are such will be within the scope of the present invention as claims defined.
Claims (4)
1. one kind is used for measuring with related to make the system at least one at least one leakage of liquid conducting pipes, and described system comprises:
(a) first and second registers that are placed with a kind of spaced relation along liquid conducting pipes, described first and second registers are suitable for detecting and being stored in the voice data that produces at least one liquid conducting pipes,
(b) mobilizable interface unit that is connected in described first and second registers, and
(c) mobilizable computer system that is connected in described interface unit, wherein the voice data of being stored by described a plurality of register can be downloaded to described computer system, described computer system can utilize voice data to measure and be associated at least one interior leakage of at least one pipeline
Wherein said first register comprises:
(a) by the shell of moulding with the inner chamber that limits a sealing, and
(b) be configured within the inner chamber of described shell, be used to detect and be stored in the electronic circuit of the voice data that produces at least one liquid conducting pipes,
Wherein said electronic circuit comprises,
(a) microprocessor of described first register operation of control,
(b) one is connected in the battery supply that described microprocessor is used to the described first record power supply,
(c) one is connected in described microprocessor is used to detect the voice data that produces at least one liquid conducting pipes sound transducer, and
(d) be connected in the data storage circuitry that described microprocessor is used to store the voice data that is detected by described sound transducer,
(e) be used to put in order and filter the signal arrangement and the filtering circuit of the voice signal that is detected by described sound transducer, described sound transducer is connected to described microprocessor by described signal arrangement and filtering circuit,
(f) be connected to the real-time clock of described microprocessor,
(g) be connected to a counter of described real-time clock and described microprocessor, and
(h) be connected to a temperature sensor of described real-time clock and described microprocessor.
2. system according to claim 1, wherein said first register comprises that one is installed on the described shell, is used for described first register is remained on magnetic engagement device at least one liquid conducting pipes.
3. system according to claim 1, wherein said first register comprises a communications connector that is installed on the described shell, this communications connector is connected to described electronic circuit and described interface unit.
4. one kind is used for measuring with related to make the system of at least one leakage at the multidimensional liquid conducting pipes with a plurality of parts, and described system comprises:
(a) a plurality of registers of placing with spaced relation along a plurality of parts of liquid conducting pipes, described a plurality of registers are suitable for detecting and being stored in the voice data that produces in the liquid conducting pipes,
(b) a mobilizable interface unit that is connected in described a plurality of registers, and
(c) a mobilizable computer system that is connected in described interface unit, wherein the voice data of being stored by described a plurality of register can be downloaded to described computer system, described computer system can utilize voice data to measure and be associated at least one leakage in the liquid conducting pipes
One of wherein said a plurality of registers comprise:
(a) by the shell of moulding with the inner chamber that limits a sealing, and
(b) be configured within the inner chamber of described shell, be used to detect and be stored in the electronic circuit of the voice data that produces at least one liquid conducting pipes,
Wherein said electronic circuit comprises,
(a) microprocessor of described first register operation of control,
(b) one is connected in the battery supply that described microprocessor is used to the described first record power supply,
(c) one is connected in described microprocessor is used to detect the voice data that produces at least one liquid conducting pipes sound transducer, and
(d) be connected in the data storage circuitry that described microprocessor is used to store the voice data that is detected by described sound transducer,
(e) be used to put in order and filter the signal arrangement and the filtering circuit of the voice signal that is detected by described sound transducer, described sound transducer is connected to described microprocessor by described signal arrangement and filtering circuit,
(f) be connected to the real-time clock of described microprocessor,
(g) be connected to a counter of described real-time clock and described microprocessor, and
(h) be connected to a temperature sensor of described real-time clock and described microprocessor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2002-0017934A KR100411330B1 (en) | 2002-04-02 | 2002-04-02 | Method and system for localizing and correlating leaks in fluid conveying conduits background of the invention |
| KR0017934/2002 | 2002-04-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1448713A CN1448713A (en) | 2003-10-15 |
| CN1283986C true CN1283986C (en) | 2006-11-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB02130114XA Expired - Fee Related CN1283986C (en) | 2002-04-02 | 2002-08-21 | Method and system for localization and correlation of leakage of fluid conveying conduit |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2003315199A (en) |
| KR (1) | KR100411330B1 (en) |
| CN (1) | CN1283986C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI481843B (en) * | 2012-10-16 | 2015-04-21 | Univ Nat Taiwan Normal | Abnormal Leak Detection System for Household Water Discharge |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100720741B1 (en) * | 2004-07-21 | 2007-05-22 | 김현일 | Apparatus for sensing leak liquid |
| CN100399019C (en) * | 2004-11-05 | 2008-07-02 | 上海奥达光电子科技有限公司 | Intelligent on-line detection system for corrosion and leakage of underground pipeline |
| JP2007225440A (en) * | 2006-02-23 | 2007-09-06 | Toshiba Corp | In-leak detection method and device of piping system |
| CN103245282B (en) * | 2013-05-13 | 2016-08-10 | 天津大学 | A kind of oil gas pipeline girth weld recognition positioning method |
| KR102505270B1 (en) * | 2022-08-03 | 2023-03-03 | 주식회사 한국빅텍 | Leakage diagnostic sensor module |
| CN117198013B (en) * | 2023-09-08 | 2024-04-16 | 广东派沃新能源科技有限公司 | Liquid leakage alarm system, method and device for water cooling equipment |
-
2002
- 2002-04-02 KR KR10-2002-0017934A patent/KR100411330B1/en active IP Right Grant
- 2002-08-21 CN CNB02130114XA patent/CN1283986C/en not_active Expired - Fee Related
- 2002-10-07 JP JP2002293380A patent/JP2003315199A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI481843B (en) * | 2012-10-16 | 2015-04-21 | Univ Nat Taiwan Normal | Abnormal Leak Detection System for Household Water Discharge |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003315199A (en) | 2003-11-06 |
| CN1448713A (en) | 2003-10-15 |
| KR20030016155A (en) | 2003-02-26 |
| KR100411330B1 (en) | 2003-12-24 |
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